/*
 * This program is free software: you can redistribute it and/or modify it under
 * the terms of the GNU General Public License as published by the Free Software
 * Foundation, either version 3 of the License, or (at your option) any later
 * version.
 * 
 * This program is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
 * FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
 * details.
 * 
 * You should have received a copy of the GNU General Public License along with
 * this program. If not, see <http://www.gnu.org/licenses/>.
 */
package net.sf.l2j.gameserver.model.actor.instance;

import java.util.concurrent.Future;
import java.util.logging.Level;
import java.util.logging.Logger;

import net.sf.l2j.Config;
import net.sf.l2j.gameserver.ThreadPoolManager;
import net.sf.l2j.gameserver.datatables.SkillTable;
import net.sf.l2j.gameserver.model.L2Object;
import net.sf.l2j.gameserver.model.L2Skill;
import net.sf.l2j.gameserver.model.actor.L2Character;
import net.sf.l2j.gameserver.model.actor.L2Summon;
import net.sf.l2j.gameserver.network.serverpackets.SetSummonRemainTime;
import net.sf.l2j.gameserver.skills.l2skills.L2SkillSummon;
import net.sf.l2j.gameserver.templates.chars.L2NpcTemplate;

public class L2SummonInstance extends L2Summon
{
    protected static final Logger log = Logger.getLogger(L2SummonInstance.class.getName());

    private float _expPenalty = 0; // exp decrease multiplier (i.e. 0.3 (= 30%) for shadow)
    private int _itemConsumeId;
    private int _itemConsumeCount;
    private int _itemConsumeSteps;
    private final int _totalLifeTime;
    private final int _timeLostIdle;
    private final int _timeLostActive;
    private int _timeRemaining;
    private int _nextItemConsumeTime;
    public int lastShowntimeRemaining; // Following FbiAgent's example to avoid sending useless packets

    private Future<?> _summonLifeTask;

    public L2SummonInstance(int objectId, L2NpcTemplate template, L2PcInstance owner, L2Skill skill)
    {
        super(objectId, template, owner);
        setShowSummonAnimation(true);

        if (skill != null)
        {
        	final L2SkillSummon summonSkill = (L2SkillSummon)skill;
            _itemConsumeId = summonSkill.getItemConsumeIdOT();
            _itemConsumeCount = summonSkill.getItemConsumeOT();
            _itemConsumeSteps = summonSkill.getItemConsumeSteps();
            _totalLifeTime = summonSkill.getTotalLifeTime();
            _timeLostIdle = summonSkill.getTimeLostIdle();
            _timeLostActive = summonSkill.getTimeLostActive();
        }
        else
        {
        	// defaults
            _itemConsumeId = 0;
            _itemConsumeCount = 0;
            _itemConsumeSteps = 0;
            _totalLifeTime = 1200000; // 20 minutes
            _timeLostIdle = 1000;
            _timeLostActive = 1000;
        }
        _timeRemaining = _totalLifeTime;
        lastShowntimeRemaining = _totalLifeTime;

        if (_itemConsumeId == 0)
        	_nextItemConsumeTime = -1; // do not consume
        else if (_itemConsumeSteps == 0)
        	_nextItemConsumeTime = -1; // do not consume
        else
        	_nextItemConsumeTime = _totalLifeTime - _totalLifeTime / (_itemConsumeSteps + 1);

        // When no item consume is defined task only need to check when summon life time has ended.
        // Otherwise have to destroy items from owner's inventory in order to let summon live.
        int delay = 1000;

        if (Config.DEBUG && (_itemConsumeCount != 0))
            _log.warning("L2SummonInstance: Item Consume ID: " + _itemConsumeId + ", Count: " + _itemConsumeCount + ", Rate: " + _itemConsumeSteps + " times.");
        if (Config.DEBUG) 
        	_log.warning("L2SummonInstance: Task Delay " + (delay / 1000) + " seconds.");

        _summonLifeTask = ThreadPoolManager.getInstance().scheduleGeneralAtFixedRate(new SummonLifetime(getOwner(), this), delay, delay);
    }

    @Override
	public final int getLevel()
    {
        return (getTemplate() != null ? getTemplate().level : 0);
    }

    @Override
	public int getSummonType()
    {
        return 1;
    }

    public void setExpPenalty(float expPenalty)
    {
        _expPenalty = expPenalty;
    }

    public float getExpPenalty()
    {
        return _expPenalty;
    }

    public int getItemConsumeCount()
    {
        return _itemConsumeCount;
    }

    public int getItemConsumeId()
    {
        return _itemConsumeId;
    }

    public int getItemConsumeSteps()
    {
        return _itemConsumeSteps;
    }

    public int getNextItemConsumeTime()
    {
        return _nextItemConsumeTime;
    }

    public int getTotalLifeTime()
    {
        return _totalLifeTime;
    }

    public int getTimeLostIdle()
    {
        return _timeLostIdle;
    }

    public int getTimeLostActive()
    {
        return _timeLostActive;
    }

    public int getTimeRemaining()
    {
        return _timeRemaining;
    }

    public void setNextItemConsumeTime(int value)
    {
        _nextItemConsumeTime = value;
    }

    public void decNextItemConsumeTime(int value)
    {
        _nextItemConsumeTime -= value;
    }

    public void decTimeRemaining(int value)
    {
    	_timeRemaining -= value;
    }

    public void addExpAndSp(int addToExp, int addToSp)
    {
        getOwner().addExpAndSp(addToExp, addToSp);
    }

    @Override
	public boolean doDie(L2Character killer)
    {
    	if (!super.doDie(killer))
    		return false;

    	if (Config.DEBUG)
            _log.warning("L2SummonInstance: " + getTemplate().name + " (" + getOwner().getName() + ") has been killed.");

        if (_summonLifeTask != null)
        {
            _summonLifeTask.cancel(false);
            _summonLifeTask = null;
        }
        return true;

    }

	/**
	 * Servitors' skills automatically change their level based on the servitor's level.
	 * Until level 70, the servitor gets 1 lv of skill per 10 levels. After that, it is 1
	 * skill level per 5 servitor levels.  If the resulting skill level doesn't exist use
	 * the max that does exist!
	 *
	 * @see com.l2jserver.gameserver.model.actor.L2Character#doCast(com.l2jserver.gameserver.model.L2Skill)
	 */
	@Override
	public void doCast(L2Skill skill)
	{
		final int petLevel = getLevel();
		int skillLevel = petLevel/10;
		if (petLevel >= 70)
			skillLevel += (petLevel-65)/10;
		
		// adjust the level for servitors less than lv 10
		if (skillLevel < 1)
			skillLevel = 1;
		
		final L2Skill skillToCast = SkillTable.getInstance().getInfo(skill.getId(),skillLevel);
		
		if (skillToCast != null)
			super.doCast(skillToCast);
		else
			super.doCast(skill);
	}
    
    static class SummonLifetime implements Runnable
    {
        private L2PcInstance _activeChar;
        private L2SummonInstance _summon;

        SummonLifetime(L2PcInstance activeChar, L2SummonInstance newpet)
        {
            _activeChar = activeChar;
            _summon = newpet;
        }

		public void run()
		{
            if (Config.DEBUG)
                log.warning("L2SummonInstance: " + _summon.getTemplate().name + " (" + _activeChar.getName() + ") run task.");

			try
			{
				double oldTimeRemaining = _summon.getTimeRemaining();
				int maxTime = _summon.getTotalLifeTime();
				double newTimeRemaining;

				// if pet is attacking
				if (_summon.isAttackingNow())
				    _summon.decTimeRemaining(_summon.getTimeLostActive());
				else
					_summon.decTimeRemaining(_summon.getTimeLostIdle());
				
				newTimeRemaining = _summon.getTimeRemaining();
				
				// check if the summon's lifetime has ran out
				if (newTimeRemaining < 0) 
	                _summon.unSummon(_activeChar);
				else if ((newTimeRemaining <= _summon.getNextItemConsumeTime()) && (oldTimeRemaining > _summon.getNextItemConsumeTime()))
				{
					_summon.decNextItemConsumeTime(maxTime / (_summon.getItemConsumeSteps()+1));

		            // check if owner has enought itemConsume, if requested
		            if (_summon.getItemConsumeCount() > 0 && _summon.getItemConsumeId() != 0 && !_summon.isDead() && !_summon.destroyItemByItemId("Consume", _summon.getItemConsumeId(), _summon.getItemConsumeCount(), _activeChar, true))
		                _summon.unSummon(_activeChar);
				}

				// prevent useless packet-sending when the difference isn't visible.
				if ((_summon.lastShowntimeRemaining - newTimeRemaining) > maxTime / 352)
				{
					_summon.getOwner().sendPacket(new SetSummonRemainTime(maxTime,(int) newTimeRemaining));
					_summon.lastShowntimeRemaining = (int) newTimeRemaining;
					_summon.updateEffectIcons();
				}
			}
			catch (Exception e)
			{
				log.log(Level.SEVERE, "Error on player [" + _activeChar.getName() + "] summon item consume task.", e);
			}
        }
    }

    @Override
	public void unSummon(L2PcInstance owner)
    {
        if (Config.DEBUG)
            _log.warning("L2SummonInstance: " + getTemplate().name + " (" + owner.getName() + ") unsummoned.");

        if (_summonLifeTask != null)
        {
            _summonLifeTask.cancel(false);
            _summonLifeTask = null;
        }

        super.unSummon(owner);
    }

    @Override
	public boolean destroyItem(String process, int objectId, int count, L2Object reference, boolean sendMessage)
    {
        return getOwner().destroyItem(process, objectId, count, reference, sendMessage);
    }

    @Override
	public boolean destroyItemByItemId(String process, int itemId, int count, L2Object reference, boolean sendMessage)
    {
        if (Config.DEBUG)
            _log.warning("L2SummonInstance: " + getTemplate().name + " (" + getOwner().getName() + ") consume.");

        return getOwner().destroyItemByItemId(process, itemId, count, reference, sendMessage);
    }
}